Physics of Atomic Nuclei最新文献_第5页

Off-Axis Injection Simulation for SYLA Storage Ring SYLA存储环离轴注入仿真

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824090102

V. S. Dyubkov

引用次数: 0

Analysis of Craters in Tungsten Films Irradiated with Picosecond Laser Pulses for Laser-Assisted Surface Diagnostics 皮秒激光脉冲辐照钨膜表面凹坑分析

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824110012

N. E. Efimov, D. N. Sinelnikov, M. V. Grishaev, Yu. M. Gasparyan, S. A. Krat, I. A. Sorokin

引用次数: 0

Rigidity Spectrum of Forbush Effects Observed During Solar Cycles 24 and 25 太阳活动周期24和25观测到的Forbush效应的刚性谱

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824110085

P. A. Sukhova, I. I. Astapov, N. S. Barbashina, P. S. Kuzmenkova, I. A. Lagoida, Yu. N. Mishutina, V. V. Shutenko

引用次数: 0

Radiation Testing of a Small Laboratory Animal Phantom Created by Fused Filament Fabrication 熔丝制造小实验动物幻影的辐射测试

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824100132

A. A. Grigorieva, A. A. Bulavskaya, E. A. Bushmina, V. A. Kuyvalaynen, I. A. Miloichikova, S. G. Stuchebrov

{"title":"Radiation Testing of a Small Laboratory Animal Phantom Created by Fused Filament Fabrication","authors":"A. A. Grigorieva, A. A. Bulavskaya, E. A. Bushmina, V. A. Kuyvalaynen, I. A. Miloichikova, S. G. Stuchebrov","doi":"10.1134/S1063778824100132","DOIUrl":"10.1134/S1063778824100132","url":null,"abstract":"In order to validate new radiotherapeutic techniques, a large number of studies using ionizing radiation are required. Such studies are often carried out using small laboratory animals, such as mice and rats, that is cause the ethical questions of the international scientific community. In this regard, the application of artificial animal models is relevant. It will allow to reduce the number of animals used. In previous studies, homogeneous monolithic test objects were fabricated and dosimetric tests were performed. 3D-printing parameters and materials were determined for the most accurate imitation of biological tissues. This study proposes to use fused filament fabrication techniques for design and creation of heterogeneous objects from different materials, which will allow the fabrication of phantoms with high accuracy in a short period of time. In this work, the male rat dosimetric phantom was designed and created. Its tomographic and dosimetric tests were carried out. The possibility of manufacturing dosimetric phantoms of small laboratory animals by fused filament fabrication methods was shown.","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 12","pages":"1934 - 1939"},"PeriodicalIF":0.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Using Magnetron Sputtering to Deposit Metal Nanoclusters 磁控溅射沉积金属纳米簇

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824100065

D. V. Bortko, K. M. Balakhnev, V. A. Shilov, P. V. Borisyuk, O. S. Vasilyev, Yu. Yu. Lebedinskii

引用次数: 0

Small 120 MeV Compton X-Rays Source 小型120 MeV康普顿x射线源

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824090278

S. M. Polozov, V. I. Rashchikov, K. S. Sagan

引用次数: 0

Comparative Study of the Structure and Mechanical Properties of PM HIP Compacts Manufactured Using Rapidly Quenched PREP Powder and a Product Made Using Traditional Technology from a Heat-Resistant Titanium-Based Alloy 快速淬火PREP粉末与传统耐热钛基合金工艺制备的PM HIP压片的组织与力学性能比较

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824090382

A. V. Shulga

{"title":"Comparative Study of the Structure and Mechanical Properties of PM HIP Compacts Manufactured Using Rapidly Quenched PREP Powder and a Product Made Using Traditional Technology from a Heat-Resistant Titanium-Based Alloy","authors":"A. V. Shulga","doi":"10.1134/S1063778824090382","DOIUrl":"10.1134/S1063778824090382","url":null,"abstract":"A comparative study of the structure of PM HIP compacts made using spherical particles (granules) of rapidly quenched PREP powder of a heat-resistant α+β Ti-based alloy and a similar product manufactured using traditional technology has been carried out. Multi-scale study of the microstructure of PM HIP compacts and an analogous product manufactured using traditional technologies has been performed by metallography, SEM, TEM, EDX, and OIM. The influence of vacuum heat treatment and temperature consolidation of HIP in the regions of (α+β) and β phases on the regularities of the structure formation of PM HIP compacts of the heat-resistant titanium-based alloy has been revealed. Features of microstructures such as lamellar, bimodal microstructure and grains have been detected and studied in detail in PM HIP compacts and in a product obtained by traditional technology. The extreme behavior of the partition ratio kd of alloying elements between the α and β phases in the product obtained using traditional technology, in comparison with PM HIP compacts, has been discovered and studied in detail. Analysis of the obtained result, in comparison with the results of a comparative study of the structure and properties of PM HIP compacts obtained using rapidly quenched PREP powders and products obtained using traditional technology from stainless steels and Ni based superalloys, has allowed the following important conclusion. The cooling rate during solidification is the dominant factor in the formation of the final structural-phase state (composition of α and β phases in the Ti alloy) and, therefore, is a key hereditary technological parameter that determines the structural-phase state and the increased level of mechanical properties of PM HIP compacts compared to the product obtained using traditional technology.","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 12","pages":"1777 - 1788"},"PeriodicalIF":0.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Simulation of Magnetic and Mechanical Characteristics of the Superconducting System of a Toroidal Magnetic Field of a Spherical Tokamak 球形托卡马克环向磁场超导系统的磁性和力学特性模拟

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824110048

I. V. Martirosian, D. A. Aleksandrov, M. A. Osipov, E. A. Vinitskiy, S. A. Krat

引用次数: 0

Design of Optically Encoded Microspheres of Different Sizes for Multiplexed Flow Cytometry 多路流式细胞术中不同尺寸光编码微球的设计

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S1063778824100478

M. D. Sokolov, E. S. Gerasimovich, I. Nabiev, A. Sukhanova

{"title":"Design of Optically Encoded Microspheres of Different Sizes for Multiplexed Flow Cytometry","authors":"M. D. Sokolov, E. S. Gerasimovich, I. Nabiev, A. Sukhanova","doi":"10.1134/S1063778824100478","DOIUrl":"10.1134/S1063778824100478","url":null,"abstract":"The development of innovative fluorescence detection methods based on optically encoded microspheres of different colors and sizes is an important area of multiplexed detection and diagnosis of various diseases. For example, the xMAP technology of the American company Luminex employs polystyrene microspheres labeled with two or three organic fluorophores at different ratios, each with its unique spectral characteristics. Although xMAP can detect as many as 80 proteins or DNA sequences in a single test system, the need to use special equipment, produced only by the same company, for multiplexed analysis, as well as inherent disadvantages of organic fluorophores (a large Stokes shift and photobleaching under laser excitation) limit the applications of this technology. The objectives of this study were to design and fabricate microspheres encoded with semiconductor quantum dots. Carboxylated melamine-formaldehyde microspheres of three sizes were optically encoded with quantum dots of two colors immobilized between layers of oppositely charged polyelectrolytes on the surface of the microspheres. As a result, six populations of microspheres with different sizes and/or unique optical codes were obtained, characterized by a long-term stability and homogeneity in aqueous solutions. Analysis of the microspheres by the dynamic light scattering, epifluorescence microscopy, and flow cytometry methods showed their suitability for multiplexed analysis. At the same time, the use of quantum dots for optical encoding makes it possible to exclude photodegradation of the signal and to excite all quantum dot populations at the same wavelength of radiation, with effective separation of signals from the microspheres into different channels of a standard flow cytometer.","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 12","pages":"1918 - 1922"},"PeriodicalIF":0.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553987","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Method of Processing, Analyzing, and Predicting Characteristics of Radiation Fluxes by Small-Volume Samples 小体积样品辐射通量特性的处理、分析和预测方法

IF 0.3 4区物理与天体物理

Physics of Atomic Nuclei Pub Date : 2025-03-05 DOI: 10.1134/S106377882409028X

V. A. Rabotkin, N. M. Blizniakov, V. M. Vahtel, D. E. Kostomakha

{"title":"Method of Processing, Analyzing, and Predicting Characteristics of Radiation Fluxes by Small-Volume Samples","authors":"V. A. Rabotkin, N. M. Blizniakov, V. M. Vahtel, D. E. Kostomakha","doi":"10.1134/S106377882409028X","DOIUrl":"10.1134/S106377882409028X","url":null,"abstract":"A method has been proposed to process and analyze the proximity by type-defining characteristics of large aggregations M > 104 of various types Q > 102 of empirical discrete random frequency vectors RFV ≡ (nu ( cdot ) = {{nu }_{0}},~...~,{{nu }_{l}}) obtained from small volume samples (10 geqslant n = sumnolimits_{i = 1}^l {{{nu }_{i}}(k = i)} ) of random counts k = 0, 1, …, l with mean value (bar {k} < 5) over all samples. The method is based on a bijection between the RFV and its type-defining identifier (I(nu ,a) > 0) a) > 0, which is a linear statistic in the form of the scalar product of ν and the non-RFV a. The discrete multimodal empirical distributions (Cleft( {I(nu ,a)} right)) representing sequences of arranged by (I(nu ,a))and grouped peaks facilitate the analysis and prediction of the characteristics of peaks and the RFVs forming them with low frequencies of their occurrences at the given M value.","PeriodicalId":728,"journal":{"name":"Physics of Atomic Nuclei","volume":"87 12","pages":"1820 - 1829"},"PeriodicalIF":0.3,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143554123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0